-30.03% is the change from 939 to 657
Calculation steps:
[( 657 - 939 ) ÷ 939] x 100 = -30.03%
Formula
Percentage change = [(657 - 939) / 939] x 100
Subtract the new number by the original number
657 - 939 = -282
-282 ÷ 939 = -0.3003194888178914
-0.3003194888178914 x 100 = -30.03%